<template>
  <ul class="switches">
  	<li class="switch-item" 
  		v-for="(item,index) in switches" 
  		:class="{'active': currentIndex === index}"
  		@click="switchItem(index)"
  		>
  	  <span>{{item.name}}</span>
  	</li>
  </ul>
</template>

<script type="text/ecmascript-6">
export default {
  props: {
    switches: {
      type: Array,
      default: []
    },
    currentIndex: {
      type: Number,
      default: 0
    }
  },
  methods: {
    switchItem (index) {
      this.$emit('switch', index) // 派发一个点击事件，告诉外部我被点击了，以及被点击的索引时什么
    }
  }
}
</script>

<style lang="stylus" rel="stylesheet/stylus" scoped="scoped">
   @import "~common/stylus/variable"

  .switches
    display: flex
    align-items: center
    width: 240px
    margin: 0 auto
    border: 1px solid $color-highlight-background
    border-radius: 5px
    .switch-item
      flex: 1
      padding: 8px
      text-align: center
      font-size: $font-size-medium
      color: $color-text-d
      &.active
        background: $color-highlight-background
        color: $color-text
</style>